Home / 14,343.72-21,489.18-9,138.60

Finding the Fourth Proportional to 14,343.72, 21,489.18 and 9,138.60

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Solution

The fourth proportional to 14,343.72, 21,489.18 and 9,138.60 is: 13,691.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,343.72 : 21,489.18 = 9,138.60 : x
  2. Step 2: Convert to fraction form
    14,343.72/21,489.18 = 9,138.60/x
  3. Step 3: Cross multiply
    14,343.72x = 21,489.18 × 9,138.60
  4. Step 4: Simplify right side
    14,343.72x = 196,381,020.35
  5. Step 5: Solve for x
    x = 196,381,020.35/14,343.72
  6. Step 6: Final answer
    x = 13,691.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.